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Table 1 <br />Sources of Odor and Possible Management Techniques <br />Source of <br />Possible cause/Assessment <br />Management approach <br />Odor <br />Feedstock <br />Putrescible material (like green <br />Expedite material processing <br />receiving <br />material or manure) sitting too long <br />Increase operating shifts <br />prior to being processed or mixed <br />Reduce incoming throughput <br />First in, first out processing <br />Material arrives with odors <br />Reduce size of material stockpiles <br />Create discreet stockpiles with greater surface to volume ratio <br />Consider blanketing odiferous materials with a one foot layer of <br />woody overs (water lightly to reduce odor releases) <br />Consider refusing acceptance of the material. <br />Consider finding an off-site use for the material (i.e., approved <br />land application, or permitted disposal at a Solid Waste Facility) <br />Material <br />Screening volatizes particles <br />Reduce screening activity during stagnant air conditions <br />Processing <br />Reduce screening activity when windsock/flag indicates wind is <br />(Screening) <br />in direction of nearby receptors <br />Mist water or neutralizer at dust generation points <br />Material <br />Material handling releases odorous <br />Reduce handling activities during stagnant air conditions. <br />Handling <br />gases, anaerobic conditions can form <br />Create windrows which are sufficiently blended. <br />(Windrows) <br />odorous compounds. <br />Turn regularly to re-establish porosity. <br />Ammonia odor (high nitrogen level). <br />Maintain adequate moisture in windrows. <br />Sulfur odor (anaerobic conditions). <br />Avoid over -watering windrows. <br />Varying odors in pile <br />Increase surface to volume ratios of active windrows. <br />Odors generated after turning <br />Increase turning frequency, check temperatures, check pH, <br />Excessive temperature. <br />increase porosity, and/or add bulking agent. <br />Measure oxygen/CO2 content regularly to determine oxygen <br />Integrated Waste Management Consulting, LLC <br />November 2016 <br />7 <br />Odor Impact Minimization Plan <br />Harvest — Lathrop Composting Facility <br />0 <br />0 <br />